citadel/modules/sieve/serv_sieve.c

   1 /*
   2  * This module glues libSieve to the Citadel server in order to implement
   3  * the Sieve mailbox filtering language (RFC 3028).
   4  *
   5  * Copyright (c) 1987-2010 by the citadel.org team
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "sysdep.h"
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <stdio.h>
  26 #include <fcntl.h>
  27 #include <ctype.h>
  28 #include <pwd.h>
  29 #include <errno.h>
  30 #include <sys/types.h>
  31
  32 #if TIME_WITH_SYS_TIME
  33 # include <sys/time.h>
  34 # include <time.h>
  35 #else
  36 # if HAVE_SYS_TIME_H
  37 #  include <sys/time.h>
  38 # else
  39 #  include <time.h>
  40 # endif
  41 #endif
  42
  43 #include <sys/wait.h>
  44 #include <string.h>
  45 #include <limits.h>
  46 #include <libcitadel.h>
  47 #include "citadel.h"
  48 #include "server.h"
  49 #include "citserver.h"
  50 #include "support.h"
  51 #include "config.h"
  52 #include "database.h"
  53 #include "msgbase.h"
  54 #include "internet_addressing.h"
  55 #include "ctdl_module.h"
  56 #include "serv_sieve.h"
  57
  58 struct RoomProcList *sieve_list = NULL;
  59 char *msiv_extensions = NULL;
  60
  61
  62 /*
  63  * Callback function to send libSieve trace messages to Citadel log facility
  64  */
  65 int ctdl_debug(sieve2_context_t *s, void *my)
  66 {
  67         syslog(LOG_DEBUG, "Sieve: %s\n", sieve2_getvalue_string(s, "message"));
  68         return SIEVE2_OK;
  69 }
  70
  71
  72 /*
  73  * Callback function to log script parsing errors
  74  */
  75 int ctdl_errparse(sieve2_context_t *s, void *my)
  76 {
  77         syslog(LOG_WARNING, "Error in script, line %d: %s\n",
  78                 sieve2_getvalue_int(s, "lineno"),
  79                 sieve2_getvalue_string(s, "message")
  80         );
  81         return SIEVE2_OK;
  82 }
  83
  84
  85 /*
  86  * Callback function to log script execution errors
  87  */
  88 int ctdl_errexec(sieve2_context_t *s, void *my)
  89 {
  90         syslog(LOG_WARNING, "Error executing script: %s\n",
  91                 sieve2_getvalue_string(s, "message")
  92         );
  93         return SIEVE2_OK;
  94 }
  95
  96
  97 /*
  98  * Callback function to redirect a message to a different folder
  99  */
 100 int ctdl_redirect(sieve2_context_t *s, void *my)
 101 {
 102         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 103         struct CtdlMessage *msg = NULL;
 104         struct recptypes *valid = NULL;
 105         char recp[256];
 106
 107         safestrncpy(recp, sieve2_getvalue_string(s, "address"), sizeof recp);
 108
 109         syslog(LOG_DEBUG, "Action is REDIRECT, recipient <%s>\n", recp);
 110
 111         valid = validate_recipients(recp, NULL, 0);
 112         if (valid == NULL) {
 113                 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 114                 return SIEVE2_ERROR_BADARGS;
 115         }
 116         if (valid->num_error > 0) {
 117                 syslog(LOG_WARNING, "REDIRECT failed: bad recipient <%s>\n", recp);
 118                 free_recipients(valid);
 119                 return SIEVE2_ERROR_BADARGS;
 120         }
 121
 122         msg = CtdlFetchMessage(cs->msgnum, 1);
 123         if (msg == NULL) {
 124                 syslog(LOG_WARNING, "REDIRECT failed: unable to fetch msg %ld\n", cs->msgnum);
 125                 free_recipients(valid);
 126                 return SIEVE2_ERROR_BADARGS;
 127         }
 128
 129         CtdlSubmitMsg(msg, valid, NULL, 0);
 130         cs->cancel_implicit_keep = 1;
 131         free_recipients(valid);
 132         CtdlFreeMessage(msg);
 133         return SIEVE2_OK;
 134 }
 135
 136
 137 /*
 138  * Callback function to indicate that a message *will* be kept in the inbox
 139  */
 140 int ctdl_keep(sieve2_context_t *s, void *my)
 141 {
 142         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 143
 144         syslog(LOG_DEBUG, "Action is KEEP\n");
 145
 146         cs->keep = 1;
 147         cs->cancel_implicit_keep = 1;
 148         return SIEVE2_OK;
 149 }
 150
 151
 152 /*
 153  * Callback function to file a message into a different mailbox
 154  */
 155 int ctdl_fileinto(sieve2_context_t *s, void *my)
 156 {
 157         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 158         const char *dest_folder = sieve2_getvalue_string(s, "mailbox");
 159         int c;
 160         char foldername[256];
 161         char original_room_name[ROOMNAMELEN];
 162
 163         syslog(LOG_DEBUG, "Action is FILEINTO, destination is <%s>\n", dest_folder);
 164
 165         /* FILEINTO 'INBOX' is the same thing as KEEP */
 166         if ( (!strcasecmp(dest_folder, "INBOX")) || (!strcasecmp(dest_folder, MAILROOM)) ) {
 167                 cs->keep = 1;
 168                 cs->cancel_implicit_keep = 1;
 169                 return SIEVE2_OK;
 170         }
 171
 172         /* Remember what room we came from */
 173         safestrncpy(original_room_name, CC->room.QRname, sizeof original_room_name);
 174
 175         /* First try a mailbox name match (check personal mail folders first) */
 176         snprintf(foldername, sizeof foldername, "%010ld.%s", cs->usernum, dest_folder);
 177         c = CtdlGetRoom(&CC->room, foldername);
 178
 179         /* Then a regular room name match (public and private rooms) */
 180         if (c != 0) {
 181                 safestrncpy(foldername, dest_folder, sizeof foldername);
 182                 c = CtdlGetRoom(&CC->room, foldername);
 183         }
 184
 185         if (c != 0) {
 186                 syslog(LOG_WARNING, "FILEINTO failed: target <%s> does not exist\n", dest_folder);
 187                 return SIEVE2_ERROR_BADARGS;
 188         }
 189
 190         /* Yes, we actually have to go there */
 191         CtdlUserGoto(NULL, 0, 0, NULL, NULL);
 192
 193         c = CtdlSaveMsgPointersInRoom(NULL, &cs->msgnum, 1, 0, NULL, 0);
 194
 195         /* Go back to the room we came from */
 196         if (strcasecmp(original_room_name, CC->room.QRname)) {
 197                 CtdlUserGoto(original_room_name, 0, 0, NULL, NULL);
 198         }
 199
 200         if (c == 0) {
 201                 cs->cancel_implicit_keep = 1;
 202                 return SIEVE2_OK;
 203         }
 204         else {
 205                 return SIEVE2_ERROR_BADARGS;
 206         }
 207 }
 208
 209
 210 /*
 211  * Callback function to indicate that a message should be discarded.
 212  */
 213 int ctdl_discard(sieve2_context_t *s, void *my)
 214 {
 215         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 216
 217         syslog(LOG_DEBUG, "Action is DISCARD\n");
 218
 219         /* Cancel the implicit keep.  That's all there is to it. */
 220         cs->cancel_implicit_keep = 1;
 221         return SIEVE2_OK;
 222 }
 223
 224
 225
 226 /*
 227  * Callback function to indicate that a message should be rejected
 228  */
 229 int ctdl_reject(sieve2_context_t *s, void *my)
 230 {
 231         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 232         char *reject_text = NULL;
 233
 234         syslog(LOG_DEBUG, "Action is REJECT\n");
 235
 236         /* If we don't know who sent the message, do a DISCARD instead. */
 237         if (IsEmptyStr(cs->sender)) {
 238                 syslog(LOG_INFO, "Unknown sender.  Doing DISCARD instead of REJECT.\n");
 239                 return ctdl_discard(s, my);
 240         }
 241
 242         /* Assemble the reject message. */
 243         reject_text = malloc(strlen(sieve2_getvalue_string(s, "message")) + 1024);
 244         if (reject_text == NULL) {
 245                 return SIEVE2_ERROR_FAIL;
 246         }
 247
 248         sprintf(reject_text,
 249                 "Content-type: text/plain\n"
 250                 "\n"
 251                 "The message was refused by the recipient's mail filtering program.\n"
 252                 "The reason given was as follows:\n"
 253                 "\n"
 254                 "%s\n"
 255                 "\n"
 256         ,
 257                 sieve2_getvalue_string(s, "message")
 258         );
 259
 260         quickie_message(        /* This delivers the message */
 261                 NULL,
 262                 cs->envelope_to,
 263                 cs->sender,
 264                 NULL,
 265                 reject_text,
 266                 FMT_RFC822,
 267                 "Delivery status notification"
 268         );
 269
 270         free(reject_text);
 271         cs->cancel_implicit_keep = 1;
 272         return SIEVE2_OK;
 273 }
 274
 275
 276
 277 /*
 278  * Callback function to indicate that a vacation message should be generated
 279  */
 280 int ctdl_vacation(sieve2_context_t *s, void *my)
 281 {
 282         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 283         struct sdm_vacation *vptr;
 284         int days = 1;
 285         const char *message;
 286         char *vacamsg_text = NULL;
 287         char vacamsg_subject[1024];
 288
 289         syslog(LOG_DEBUG, "Action is VACATION\n");
 290
 291         message = sieve2_getvalue_string(s, "message");
 292         if (message == NULL) return SIEVE2_ERROR_BADARGS;
 293
 294         if (sieve2_getvalue_string(s, "subject") != NULL) {
 295                 safestrncpy(vacamsg_subject, sieve2_getvalue_string(s, "subject"), sizeof vacamsg_subject);
 296         }
 297         else {
 298                 snprintf(vacamsg_subject, sizeof vacamsg_subject, "Re: %s", cs->subject);
 299         }
 300
 301         days = sieve2_getvalue_int(s, "days");
 302         if (days < 1) days = 1;
 303         if (days > MAX_VACATION) days = MAX_VACATION;
 304
 305         /* Check to see whether we've already alerted this sender that we're on vacation. */
 306         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 307                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 308                         if ( (time(NULL) - vptr->timestamp) < (days * 86400) ) {
 309                                 syslog(LOG_DEBUG, "Already alerted <%s> recently.\n", cs->sender);
 310                                 return SIEVE2_OK;
 311                         }
 312                 }
 313         }
 314
 315         /* Assemble the reject message. */
 316         vacamsg_text = malloc(strlen(message) + 1024);
 317         if (vacamsg_text == NULL) {
 318                 return SIEVE2_ERROR_FAIL;
 319         }
 320
 321         sprintf(vacamsg_text,
 322                 "Content-type: text/plain charset=utf-8\n"
 323                 "\n"
 324                 "%s\n"
 325                 "\n"
 326         ,
 327                 message
 328         );
 329
 330         quickie_message(        /* This delivers the message */
 331                 NULL,
 332                 cs->envelope_to,
 333                 cs->sender,
 334                 NULL,
 335                 vacamsg_text,
 336                 FMT_RFC822,
 337                 vacamsg_subject
 338         );
 339
 340         free(vacamsg_text);
 341
 342         /* Now update the list to reflect the fact that we've alerted this sender.
 343          * If they're already in the list, just update the timestamp.
 344          */
 345         for (vptr = cs->u->first_vacation; vptr != NULL; vptr = vptr->next) {
 346                 if (!strcasecmp(vptr->fromaddr, cs->sender)) {
 347                         vptr->timestamp = time(NULL);
 348                         return SIEVE2_OK;
 349                 }
 350         }
 351
 352         /* If we get to this point, create a new record.
 353          */
 354         vptr = malloc(sizeof(struct sdm_vacation));
 355         memset(vptr, 0, sizeof(struct sdm_vacation));
 356         vptr->timestamp = time(NULL);
 357         safestrncpy(vptr->fromaddr, cs->sender, sizeof vptr->fromaddr);
 358         vptr->next = cs->u->first_vacation;
 359         cs->u->first_vacation = vptr;
 360
 361         return SIEVE2_OK;
 362 }
 363
 364
 365 /*
 366  * Callback function to parse addresses per local system convention
 367  * It is disabled because we don't support subaddresses.
 368  */
 369 #if 0
 370 int ctdl_getsubaddress(sieve2_context_t *s, void *my)
 371 {
 372         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 373
 374         /* libSieve does not take ownership of the memory used here.  But, since we
 375          * are just pointing to locations inside a struct which we are going to free
 376          * later, we're ok.
 377          */
 378         sieve2_setvalue_string(s, "user", cs->recp_user);
 379         sieve2_setvalue_string(s, "detail", "");
 380         sieve2_setvalue_string(s, "localpart", cs->recp_user);
 381         sieve2_setvalue_string(s, "domain", cs->recp_node);
 382         return SIEVE2_OK;
 383 }
 384 #endif
 385
 386
 387 /*
 388  * Callback function to parse message envelope
 389  */
 390 int ctdl_getenvelope(sieve2_context_t *s, void *my)
 391 {
 392         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 393
 394         syslog(LOG_DEBUG, "Action is GETENVELOPE\nEnvFrom: %s\n  EnvTo: %s\n",
 395                 cs->envelope_from, cs->envelope_to);
 396
 397         if (cs->envelope_from != NULL) {
 398                 if ((cs->envelope_from[0] != '@')&&(cs->envelope_from[strlen(cs->envelope_from)-1] != '@')) {
 399                         sieve2_setvalue_string(s, "from", cs->envelope_from);
 400                 }
 401                 else {
 402                         sieve2_setvalue_string(s, "from", "invalid_envelope_from@example.org");
 403                 }
 404         }
 405         else {
 406                 sieve2_setvalue_string(s, "from", "null_envelope_from@example.org");
 407         }
 408
 409
 410         if (cs->envelope_to != NULL) {
 411                 if ((cs->envelope_to[0] != '@') && (cs->envelope_to[strlen(cs->envelope_to)-1] != '@')) {
 412                         sieve2_setvalue_string(s, "to", cs->envelope_to);
 413                 }
 414                 else {
 415                         sieve2_setvalue_string(s, "to", "invalid_envelope_to@example.org");
 416                 }
 417         }
 418         else {
 419                 sieve2_setvalue_string(s, "to", "null_envelope_to@example.org");
 420         }
 421
 422         return SIEVE2_OK;
 423 }
 424
 425
 426 /*
 427  * Callback function to fetch message body
 428  * (Uncomment the code if we implement this extension)
 429  *
 430 int ctdl_getbody(sieve2_context_t *s, void *my)
 431 {
 432         return SIEVE2_ERROR_UNSUPPORTED;
 433 }
 434  *
 435  */
 436
 437
 438 /*
 439  * Callback function to fetch message size
 440  */
 441 int ctdl_getsize(sieve2_context_t *s, void *my)
 442 {
 443         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 444         struct MetaData smi;
 445
 446         GetMetaData(&smi, cs->msgnum);
 447
 448         if (smi.meta_rfc822_length > 0L) {
 449                 sieve2_setvalue_int(s, "size", (int)smi.meta_rfc822_length);
 450                 return SIEVE2_OK;
 451         }
 452
 453         return SIEVE2_ERROR_UNSUPPORTED;
 454 }
 455
 456
 457 /*
 458  * Callback function to retrieve the sieve script
 459  */
 460 int ctdl_getscript(sieve2_context_t *s, void *my) {
 461         struct sdm_script *sptr;
 462         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 463
 464         for (sptr=cs->u->first_script; sptr!=NULL; sptr=sptr->next) {
 465                 if (sptr->script_active > 0) {
 466                         syslog(LOG_DEBUG, "ctdl_getscript() is using script '%s'\n", sptr->script_name);
 467                         sieve2_setvalue_string(s, "script", sptr->script_content);
 468                         return SIEVE2_OK;
 469                 }
 470         }
 471
 472         syslog(LOG_DEBUG, "ctdl_getscript() found no active script\n");
 473         return SIEVE2_ERROR_GETSCRIPT;
 474 }
 475
 476 /*
 477  * Callback function to retrieve message headers
 478  */
 479 int ctdl_getheaders(sieve2_context_t *s, void *my) {
 480
 481         struct ctdl_sieve *cs = (struct ctdl_sieve *)my;
 482
 483         syslog(LOG_DEBUG, "ctdl_getheaders() was called\n");
 484         sieve2_setvalue_string(s, "allheaders", cs->rfc822headers);
 485         return SIEVE2_OK;
 486 }
 487
 488
 489
 490 /*
 491  * Add a room to the list of those rooms which potentially require sieve processing
 492  */
 493 void sieve_queue_room(struct ctdlroom *which_room) {
 494         struct RoomProcList *ptr;
 495
 496         ptr = (struct RoomProcList *) malloc(sizeof (struct RoomProcList));
 497         if (ptr == NULL) return;
 498
 499         safestrncpy(ptr->name, which_room->QRname, sizeof ptr->name);
 500         begin_critical_section(S_SIEVELIST);
 501         ptr->next = sieve_list;
 502         sieve_list = ptr;
 503         end_critical_section(S_SIEVELIST);
 504         syslog(LOG_DEBUG, "<%s> queued for Sieve processing\n", which_room->QRname);
 505 }
 506
 507
 508
 509 /*
 510  * Perform sieve processing for one message (called by sieve_do_room() for each message)
 511  */
 512 void sieve_do_msg(long msgnum, void *userdata) {
 513         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 514         sieve2_context_t *sieve2_context;
 515         struct ctdl_sieve my;
 516         int res;
 517         struct CtdlMessage *msg;
 518         int i;
 519         size_t headers_len = 0;
 520         int len = 0;
 521
 522         if (u == NULL)
 523         {
 524                 syslog(LOG_EMERG, "Can't process message <%ld> without userdata!\n", msgnum);
 525                 return;
 526         }
 527
 528         sieve2_context = u->sieve2_context;
 529
 530         syslog(LOG_DEBUG, "Performing sieve processing on msg <%ld>\n", msgnum);
 531
 532         /*
 533          * Make sure you include message body so you can get those second-level headers ;)
 534          */
 535         msg = CtdlFetchMessage(msgnum, 1);
 536         if (msg == NULL) return;
 537
 538         /*
 539          * Grab the message headers so we can feed them to libSieve.
 540          * Use HEADERS_ONLY rather than HEADERS_FAST in order to include second-level headers.
 541          */
 542         CC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
 543         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ONLY, 0, 1, 0);
 544         headers_len = StrLength(CC->redirect_buffer);
 545         my.rfc822headers = SmashStrBuf(&CC->redirect_buffer);
 546
 547         /*
 548          * libSieve clobbers the stack if it encounters badly formed
 549          * headers.  Sanitize our headers by stripping nonprintable
 550          * characters.
 551          */
 552         for (i=0; i<headers_len; ++i) {
 553                 if (!isascii(my.rfc822headers[i])) {
 554                         my.rfc822headers[i] = '_';
 555                 }
 556         }
 557
 558         my.keep = 0;                            /* Set to 1 to declare an *explicit* keep */
 559         my.cancel_implicit_keep = 0;            /* Some actions will cancel the implicit keep */
 560         my.usernum = atol(CC->room.QRname);     /* Keep track of the owner of the room's namespace */
 561         my.msgnum = msgnum;                     /* Keep track of the message number in our local store */
 562         my.u = u;                               /* Hand off a pointer to the rest of this info */
 563
 564         /* Keep track of the recipient so we can do handling based on it later */
 565         process_rfc822_addr(msg->cm_fields['R'], my.recp_user, my.recp_node, my.recp_name);
 566
 567         /* Keep track of the sender so we can use it for REJECT and VACATION responses */
 568         if (msg->cm_fields['F'] != NULL) {
 569                 safestrncpy(my.sender, msg->cm_fields['F'], sizeof my.sender);
 570         }
 571         else if ( (msg->cm_fields['A'] != NULL) && (msg->cm_fields['N'] != NULL) ) {
 572                 snprintf(my.sender, sizeof my.sender, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
 573         }
 574         else if (msg->cm_fields['A'] != NULL) {
 575                 safestrncpy(my.sender, msg->cm_fields['A'], sizeof my.sender);
 576         }
 577         else {
 578                 strcpy(my.sender, "");
 579         }
 580
 581         /* Keep track of the subject so we can use it for VACATION responses */
 582         if (msg->cm_fields['U'] != NULL) {
 583                 safestrncpy(my.subject, msg->cm_fields['U'], sizeof my.subject);
 584         }
 585         else {
 586                 strcpy(my.subject, "");
 587         }
 588
 589         /* Keep track of the envelope-from address (use body-from if not found) */
 590         if (msg->cm_fields['P'] != NULL) {
 591                 safestrncpy(my.envelope_from, msg->cm_fields['P'], sizeof my.envelope_from);
 592                 stripallbut(my.envelope_from, '<', '>');
 593         }
 594         else if (msg->cm_fields['F'] != NULL) {
 595                 safestrncpy(my.envelope_from, msg->cm_fields['F'], sizeof my.envelope_from);
 596                 stripallbut(my.envelope_from, '<', '>');
 597         }
 598         else {
 599                 strcpy(my.envelope_from, "");
 600         }
 601
 602         len = strlen(my.envelope_from);
 603         for (i=0; i<len; ++i) {
 604                 if (isspace(my.envelope_from[i])) my.envelope_from[i] = '_';
 605         }
 606         if (haschar(my.envelope_from, '@') == 0) {
 607                 strcat(my.envelope_from, "@");
 608                 strcat(my.envelope_from, config.c_fqdn);
 609         }
 610
 611         /* Keep track of the envelope-to address (use body-to if not found) */
 612         if (msg->cm_fields['V'] != NULL) {
 613                 safestrncpy(my.envelope_to, msg->cm_fields['V'], sizeof my.envelope_to);
 614                 stripallbut(my.envelope_to, '<', '>');
 615         }
 616         else if (msg->cm_fields['R'] != NULL) {
 617                 safestrncpy(my.envelope_to, msg->cm_fields['R'], sizeof my.envelope_to);
 618                 if (msg->cm_fields['D'] != NULL) {
 619                         strcat(my.envelope_to, "@");
 620                         strcat(my.envelope_to, msg->cm_fields['D']);
 621                 }
 622                 stripallbut(my.envelope_to, '<', '>');
 623         }
 624         else {
 625                 strcpy(my.envelope_to, "");
 626         }
 627
 628         len = strlen(my.envelope_to);
 629         for (i=0; i<len; ++i) {
 630                 if (isspace(my.envelope_to[i])) my.envelope_to[i] = '_';
 631         }
 632         if (haschar(my.envelope_to, '@') == 0) {
 633                 strcat(my.envelope_to, "@");
 634                 strcat(my.envelope_to, config.c_fqdn);
 635         }
 636
 637         CtdlFreeMessage(msg);
 638
 639         syslog(LOG_DEBUG, "Calling sieve2_execute()\n");
 640         res = sieve2_execute(sieve2_context, &my);
 641         if (res != SIEVE2_OK) {
 642                 syslog(LOG_CRIT, "sieve2_execute() returned %d: %s\n", res, sieve2_errstr(res));
 643         }
 644
 645         free(my.rfc822headers);
 646         my.rfc822headers = NULL;
 647
 648         /*
 649          * Delete the message from the inbox unless either we were told not to, or
 650          * if no other action was successfully taken.
 651          */
 652         if ( (!my.keep) && (my.cancel_implicit_keep) ) {
 653                 syslog(LOG_DEBUG, "keep is 0 -- deleting message from inbox\n");
 654                 CtdlDeleteMessages(CC->room.QRname, &msgnum, 1, "");
 655         }
 656
 657         syslog(LOG_DEBUG, "Completed sieve processing on msg <%ld>\n", msgnum);
 658         u->lastproc = msgnum;
 659
 660         return;
 661 }
 662
 663
 664
 665 /*
 666  * Given the on-disk representation of our Sieve config, load
 667  * it into an in-memory data structure.
 668  */
 669 void parse_sieve_config(char *conf, struct sdm_userdata *u) {
 670         char *ptr;
 671         char *c, *vacrec;
 672         char keyword[256];
 673         struct sdm_script *sptr;
 674         struct sdm_vacation *vptr;
 675
 676         ptr = conf;
 677         while (c = ptr, ptr = bmstrcasestr(ptr, CTDLSIEVECONFIGSEPARATOR), ptr != NULL) {
 678                 *ptr = 0;
 679                 ptr += strlen(CTDLSIEVECONFIGSEPARATOR);
 680
 681                 extract_token(keyword, c, 0, '|', sizeof keyword);
 682
 683                 if (!strcasecmp(keyword, "lastproc")) {
 684                         u->lastproc = extract_long(c, 1);
 685                 }
 686
 687                 else if (!strcasecmp(keyword, "script")) {
 688                         sptr = malloc(sizeof(struct sdm_script));
 689                         extract_token(sptr->script_name, c, 1, '|', sizeof sptr->script_name);
 690                         sptr->script_active = extract_int(c, 2);
 691                         remove_token(c, 0, '|');
 692                         remove_token(c, 0, '|');
 693                         remove_token(c, 0, '|');
 694                         sptr->script_content = strdup(c);
 695                         sptr->next = u->first_script;
 696                         u->first_script = sptr;
 697                 }
 698
 699                 else if (!strcasecmp(keyword, "vacation")) {
 700
 701                         if (c != NULL) while (vacrec=c, c=strchr(c, '\n'), (c != NULL)) {
 702
 703                                 *c = 0;
 704                                 ++c;
 705
 706                                 if (strncasecmp(vacrec, "vacation|", 9)) {
 707                                         vptr = malloc(sizeof(struct sdm_vacation));
 708                                         extract_token(vptr->fromaddr, vacrec, 0, '|', sizeof vptr->fromaddr);
 709                                         vptr->timestamp = extract_long(vacrec, 1);
 710                                         vptr->next = u->first_vacation;
 711                                         u->first_vacation = vptr;
 712                                 }
 713                         }
 714                 }
 715
 716                 /* ignore unknown keywords */
 717         }
 718 }
 719
 720 /*
 721  * We found the Sieve configuration for this user.
 722  * Now do something with it.
 723  */
 724 void get_sieve_config_backend(long msgnum, void *userdata) {
 725         struct sdm_userdata *u = (struct sdm_userdata *) userdata;
 726         struct CtdlMessage *msg;
 727         char *conf;
 728
 729         u->config_msgnum = msgnum;
 730         msg = CtdlFetchMessage(msgnum, 1);
 731         if (msg == NULL) {
 732                 u->config_msgnum = (-1) ;
 733                 return;
 734         }
 735
 736         conf = msg->cm_fields['M'];
 737         msg->cm_fields['M'] = NULL;
 738         CtdlFreeMessage(msg);
 739
 740         if (conf != NULL) {
 741                 parse_sieve_config(conf, u);
 742                 free(conf);
 743         }
 744
 745 }
 746
 747
 748 /*
 749  * Write our citadel sieve config back to disk
 750  *
 751  * (Set yes_write_to_disk to nonzero to make it actually write the config;
 752  * otherwise it just frees the data structures.)
 753  */
 754 void rewrite_ctdl_sieve_config(struct sdm_userdata *u, int yes_write_to_disk) {
 755         StrBuf *text;
 756         struct sdm_script *sptr;
 757         struct sdm_vacation *vptr;
 758
 759         text = NewStrBufPlain(NULL, SIZ);
 760         StrBufPrintf(text,
 761                      "Content-type: application/x-citadel-sieve-config\n"
 762                      "\n"
 763                      CTDLSIEVECONFIGSEPARATOR
 764                      "lastproc|%ld"
 765                      CTDLSIEVECONFIGSEPARATOR
 766                      ,
 767                      u->lastproc
 768                 );
 769
 770         while (u->first_script != NULL) {
 771                 StrBufAppendPrintf(text,
 772                                    "script|%s|%d|%s" CTDLSIEVECONFIGSEPARATOR,
 773                                    u->first_script->script_name,
 774                                    u->first_script->script_active,
 775                                    u->first_script->script_content
 776                         );
 777                 sptr = u->first_script;
 778                 u->first_script = u->first_script->next;
 779                 free(sptr->script_content);
 780                 free(sptr);
 781         }
 782
 783         if (u->first_vacation != NULL) {
 784
 785                 StrBufAppendPrintf(text, "vacation|\n");
 786                 while (u->first_vacation != NULL) {
 787                         if ( (time(NULL) - u->first_vacation->timestamp) < (MAX_VACATION * 86400)) {
 788                                 StrBufAppendPrintf(text, "%s|%ld\n",
 789                                                    u->first_vacation->fromaddr,
 790                                                    u->first_vacation->timestamp
 791                                         );
 792                         }
 793                         vptr = u->first_vacation;
 794                         u->first_vacation = u->first_vacation->next;
 795                         free(vptr);
 796                 }
 797                 StrBufAppendPrintf(text, CTDLSIEVECONFIGSEPARATOR);
 798         }
 799
 800         if (yes_write_to_disk)
 801         {
 802                 /* Save the config */
 803                 quickie_message("Citadel", NULL, NULL, u->config_roomname,
 804                                 ChrPtr(text),
 805                                 4,
 806                                 "Sieve configuration"
 807                 );
 808
 809                 /* And delete the old one */
 810                 if (u->config_msgnum > 0) {
 811                         CtdlDeleteMessages(u->config_roomname, &u->config_msgnum, 1, "");
 812                 }
 813         }
 814
 815         FreeStrBuf (&text);
 816
 817 }
 818
 819
 820 /*
 821  * This is our callback registration table for libSieve.
 822  */
 823 sieve2_callback_t ctdl_sieve_callbacks[] = {
 824         { SIEVE2_ACTION_REJECT,         ctdl_reject             },
 825         { SIEVE2_ACTION_VACATION,       ctdl_vacation           },
 826         { SIEVE2_ERRCALL_PARSE,         ctdl_errparse           },
 827         { SIEVE2_ERRCALL_RUNTIME,       ctdl_errexec            },
 828         { SIEVE2_ACTION_FILEINTO,       ctdl_fileinto           },
 829         { SIEVE2_ACTION_REDIRECT,       ctdl_redirect           },
 830         { SIEVE2_ACTION_DISCARD,        ctdl_discard            },
 831         { SIEVE2_ACTION_KEEP,           ctdl_keep               },
 832         { SIEVE2_SCRIPT_GETSCRIPT,      ctdl_getscript          },
 833         { SIEVE2_DEBUG_TRACE,           ctdl_debug              },
 834         { SIEVE2_MESSAGE_GETALLHEADERS, ctdl_getheaders         },
 835         { SIEVE2_MESSAGE_GETSIZE,       ctdl_getsize            },
 836         { SIEVE2_MESSAGE_GETENVELOPE,   ctdl_getenvelope        },
 837 /*
 838  * These actions are unsupported by Citadel so we don't declare them.
 839  *
 840         { SIEVE2_ACTION_NOTIFY,         ctdl_notify             },
 841         { SIEVE2_MESSAGE_GETSUBADDRESS, ctdl_getsubaddress      },
 842         { SIEVE2_MESSAGE_GETBODY,       ctdl_getbody            },
 843  *
 844  */
 845         { 0 }
 846 };
 847
 848
 849 /*
 850  * Perform sieve processing for a single room
 851  */
 852 void sieve_do_room(char *roomname) {
 853
 854         struct sdm_userdata u;
 855         sieve2_context_t *sieve2_context = NULL;        /* Context for sieve parser */
 856         int res;                                        /* Return code from libsieve calls */
 857         long orig_lastproc = 0;
 858
 859         memset(&u, 0, sizeof u);
 860
 861         /* See if the user who owns this 'mailbox' has any Sieve scripts that
 862          * require execution.
 863          */
 864         snprintf(u.config_roomname, sizeof u.config_roomname, "%010ld.%s", atol(roomname), USERCONFIGROOM);
 865         if (CtdlGetRoom(&CC->room, u.config_roomname) != 0) {
 866                 syslog(LOG_DEBUG, "<%s> does not exist.  No processing is required.\n", u.config_roomname);
 867                 return;
 868         }
 869
 870         /*
 871          * Find the sieve scripts and control record and do something
 872          */
 873         u.config_msgnum = (-1);
 874         CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 875                 get_sieve_config_backend, (void *)&u );
 876
 877         if (u.config_msgnum < 0) {
 878                 syslog(LOG_DEBUG, "No Sieve rules exist.  No processing is required.\n");
 879                 return;
 880         }
 881
 882         syslog(LOG_DEBUG, "Rules found.  Performing Sieve processing for <%s>\n", roomname);
 883
 884         if (CtdlGetRoom(&CC->room, roomname) != 0) {
 885                 syslog(LOG_CRIT, "ERROR: cannot load <%s>\n", roomname);
 886                 return;
 887         }
 888
 889         /* Initialize the Sieve parser */
 890
 891         res = sieve2_alloc(&sieve2_context);
 892         if (res != SIEVE2_OK) {
 893                 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
 894                 return;
 895         }
 896
 897         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
 898         if (res != SIEVE2_OK) {
 899                 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
 900                 goto BAIL;
 901         }
 902
 903         /* Validate the script */
 904
 905         struct ctdl_sieve my;           /* dummy ctdl_sieve struct just to pass "u" slong */
 906         memset(&my, 0, sizeof my);
 907         my.u = &u;
 908         res = sieve2_validate(sieve2_context, &my);
 909         if (res != SIEVE2_OK) {
 910                 syslog(LOG_CRIT, "sieve2_validate() returned %d: %s\n", res, sieve2_errstr(res));
 911                 goto BAIL;
 912         }
 913
 914         /* Do something useful */
 915         u.sieve2_context = sieve2_context;
 916         orig_lastproc = u.lastproc;
 917         CtdlForEachMessage(MSGS_GT, u.lastproc, NULL, NULL, NULL,
 918                 sieve_do_msg,
 919                 (void *) &u
 920         );
 921
 922 BAIL:
 923         res = sieve2_free(&sieve2_context);
 924         if (res != SIEVE2_OK) {
 925                 syslog(LOG_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
 926         }
 927
 928         /* Rewrite the config if we have to */
 929         rewrite_ctdl_sieve_config(&u, (u.lastproc > orig_lastproc) ) ;
 930 }
 931
 932
 933 /*
 934  * Perform sieve processing for all rooms which require it
 935  */
 936 void perform_sieve_processing(void) {
 937         struct RoomProcList *ptr = NULL;
 938
 939         if (sieve_list != NULL) {
 940                 syslog(LOG_DEBUG, "Begin Sieve processing\n");
 941                 while (sieve_list != NULL) {
 942                         char spoolroomname[ROOMNAMELEN];
 943                         safestrncpy(spoolroomname, sieve_list->name, sizeof spoolroomname);
 944                         begin_critical_section(S_SIEVELIST);
 945
 946                         /* pop this record off the list */
 947                         ptr = sieve_list;
 948                         sieve_list = sieve_list->next;
 949                         free(ptr);
 950
 951                         /* invalidate any duplicate entries to prevent double processing */
 952                         for (ptr=sieve_list; ptr!=NULL; ptr=ptr->next) {
 953                                 if (!strcasecmp(ptr->name, spoolroomname)) {
 954                                         ptr->name[0] = 0;
 955                                 }
 956                         }
 957
 958                         end_critical_section(S_SIEVELIST);
 959                         if (spoolroomname[0] != 0) {
 960                                 sieve_do_room(spoolroomname);
 961                         }
 962                 }
 963         }
 964 }
 965
 966
 967 void msiv_load(struct sdm_userdata *u) {
 968         char hold_rm[ROOMNAMELEN];
 969
 970         strcpy(hold_rm, CC->room.QRname);       /* save current room */
 971
 972         /* Take a spin through the user's personal address book */
 973         if (CtdlGetRoom(&CC->room, USERCONFIGROOM) == 0) {
 974
 975                 u->config_msgnum = (-1);
 976                 strcpy(u->config_roomname, CC->room.QRname);
 977                 CtdlForEachMessage(MSGS_LAST, 1, NULL, SIEVECONFIG, NULL,
 978                         get_sieve_config_backend, (void *)u );
 979
 980         }
 981
 982         if (strcmp(CC->room.QRname, hold_rm)) {
 983                 CtdlGetRoom(&CC->room, hold_rm);    /* return to saved room */
 984         }
 985 }
 986
 987 void msiv_store(struct sdm_userdata *u, int yes_write_to_disk) {
 988 /*
 989  * Initialise the sieve configs last processed message number.
 990  * We don't need to get the highest message number for the users inbox since the systems
 991  * highest message number will be higher than that and loer than this scripts message number
 992  * This prevents this new script from processing any old messages in the inbox.
 993  * Most importantly it will prevent vacation messages being sent to lots of old messages
 994  * in the inbox.
 995  */
 996         u->lastproc = CtdlGetCurrentMessageNumber();
 997         rewrite_ctdl_sieve_config(u, yes_write_to_disk);
 998 }
 999
1000
1001 /*
1002  * Select the active script.
1003  * (Set script_name to an empty string to disable all scripts)
1004  *
1005  * Returns 0 on success or nonzero for error.
1006  */
1007 int msiv_setactive(struct sdm_userdata *u, char *script_name) {
1008         int ok = 0;
1009         struct sdm_script *s;
1010
1011         /* First see if the supplied value is ok */
1012
1013         if (IsEmptyStr(script_name)) {
1014                 ok = 1;
1015         }
1016         else {
1017                 for (s=u->first_script; s!=NULL; s=s->next) {
1018                         if (!strcasecmp(s->script_name, script_name)) {
1019                                 ok = 1;
1020                         }
1021                 }
1022         }
1023
1024         if (!ok) return(-1);
1025
1026         /* Now set the active script */
1027         for (s=u->first_script; s!=NULL; s=s->next) {
1028                 if (!strcasecmp(s->script_name, script_name)) {
1029                         s->script_active = 1;
1030                 }
1031                 else {
1032                         s->script_active = 0;
1033                 }
1034         }
1035
1036         return(0);
1037 }
1038
1039
1040 /*
1041  * Fetch a script by name.
1042  *
1043  * Returns NULL if the named script was not found, or a pointer to the script
1044  * if it was found.   NOTE: the caller does *not* own the memory returned by
1045  * this function.  Copy it if you need to keep it.
1046  */
1047 char *msiv_getscript(struct sdm_userdata *u, char *script_name) {
1048         struct sdm_script *s;
1049
1050         for (s=u->first_script; s!=NULL; s=s->next) {
1051                 if (!strcasecmp(s->script_name, script_name)) {
1052                         if (s->script_content != NULL) {
1053                                 return (s->script_content);
1054                         }
1055                 }
1056         }
1057
1058         return(NULL);
1059 }
1060
1061
1062 /*
1063  * Delete a script by name.
1064  *
1065  * Returns 0 if the script was deleted.
1066  *       1 if the script was not found.
1067  *       2 if the script cannot be deleted because it is active.
1068  */
1069 int msiv_deletescript(struct sdm_userdata *u, char *script_name) {
1070         struct sdm_script *s = NULL;
1071         struct sdm_script *script_to_delete = NULL;
1072
1073         for (s=u->first_script; s!=NULL; s=s->next) {
1074                 if (!strcasecmp(s->script_name, script_name)) {
1075                         script_to_delete = s;
1076                         if (s->script_active) {
1077                                 return(2);
1078                         }
1079                 }
1080         }
1081
1082         if (script_to_delete == NULL) return(1);
1083
1084         if (u->first_script == script_to_delete) {
1085                 u->first_script = u->first_script->next;
1086         }
1087         else for (s=u->first_script; s!=NULL; s=s->next) {
1088                 if (s->next == script_to_delete) {
1089                         s->next = s->next->next;
1090                 }
1091         }
1092
1093         free(script_to_delete->script_content);
1094         free(script_to_delete);
1095         return(0);
1096 }
1097
1098
1099 /*
1100  * Add or replace a new script.
1101  * NOTE: after this function returns, "u" owns the memory that "script_content"
1102  * was pointing to.
1103  */
1104 void msiv_putscript(struct sdm_userdata *u, char *script_name, char *script_content) {
1105         int replaced = 0;
1106         struct sdm_script *s, *sptr;
1107
1108         for (s=u->first_script; s!=NULL; s=s->next) {
1109                 if (!strcasecmp(s->script_name, script_name)) {
1110                         if (s->script_content != NULL) {
1111                                 free(s->script_content);
1112                         }
1113                         s->script_content = script_content;
1114                         replaced = 1;
1115                 }
1116         }
1117
1118         if (replaced == 0) {
1119                 sptr = malloc(sizeof(struct sdm_script));
1120                 safestrncpy(sptr->script_name, script_name, sizeof sptr->script_name);
1121                 sptr->script_content = script_content;
1122                 sptr->script_active = 0;
1123                 sptr->next = u->first_script;
1124                 u->first_script = sptr;
1125         }
1126 }
1127
1128
1129
1130 /*
1131  * Citadel protocol to manage sieve scripts.
1132  * This is basically a simplified (read: doesn't resemble IMAP) version
1133  * of the 'managesieve' protocol.
1134  */
1135 void cmd_msiv(char *argbuf) {
1136         char subcmd[256];
1137         struct sdm_userdata u;
1138         char script_name[256];
1139         char *script_content = NULL;
1140         struct sdm_script *s;
1141         int i;
1142         int changes_made = 0;
1143
1144         memset(&u, 0, sizeof(struct sdm_userdata));
1145
1146         if (CtdlAccessCheck(ac_logged_in)) return;
1147         extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
1148         msiv_load(&u);
1149
1150         if (!strcasecmp(subcmd, "putscript")) {
1151                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1152                 if (!IsEmptyStr(script_name)) {
1153                         cprintf("%d Transmit script now\n", SEND_LISTING);
1154                         script_content = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
1155                         msiv_putscript(&u, script_name, script_content);
1156                         changes_made = 1;
1157                 }
1158                 else {
1159                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1160                 }
1161         }
1162
1163         else if (!strcasecmp(subcmd, "listscripts")) {
1164                 cprintf("%d Scripts:\n", LISTING_FOLLOWS);
1165                 for (s=u.first_script; s!=NULL; s=s->next) {
1166                         if (s->script_content != NULL) {
1167                                 cprintf("%s|%d|\n", s->script_name, s->script_active);
1168                         }
1169                 }
1170                 cprintf("000\n");
1171         }
1172
1173         else if (!strcasecmp(subcmd, "setactive")) {
1174                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1175                 if (msiv_setactive(&u, script_name) == 0) {
1176                         cprintf("%d ok\n", CIT_OK);
1177                         changes_made = 1;
1178                 }
1179                 else {
1180                         cprintf("%d Script '%s' does not exist.\n",
1181                                 ERROR + ILLEGAL_VALUE,
1182                                 script_name
1183                         );
1184                 }
1185         }
1186
1187         else if (!strcasecmp(subcmd, "getscript")) {
1188                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1189                 script_content = msiv_getscript(&u, script_name);
1190                 if (script_content != NULL) {
1191                         int script_len;
1192
1193                         cprintf("%d Script:\n", LISTING_FOLLOWS);
1194                         script_len = strlen(script_content);
1195                         client_write(script_content, script_len);
1196                         if (script_content[script_len-1] != '\n') {
1197                                 cprintf("\n");
1198                         }
1199                         cprintf("000\n");
1200                 }
1201                 else {
1202                         cprintf("%d Invalid script name.\n", ERROR + ILLEGAL_VALUE);
1203                 }
1204         }
1205
1206         else if (!strcasecmp(subcmd, "deletescript")) {
1207                 extract_token(script_name, argbuf, 1, '|', sizeof script_name);
1208                 i = msiv_deletescript(&u, script_name);
1209                 if (i == 0) {
1210                         cprintf("%d ok\n", CIT_OK);
1211                         changes_made = 1;
1212                 }
1213                 else if (i == 1) {
1214                         cprintf("%d Script '%s' does not exist.\n",
1215                                 ERROR + ILLEGAL_VALUE,
1216                                 script_name
1217                         );
1218                 }
1219                 else if (i == 2) {
1220                         cprintf("%d Script '%s' is active and cannot be deleted.\n",
1221                                 ERROR + ILLEGAL_VALUE,
1222                                 script_name
1223                         );
1224                 }
1225                 else {
1226                         cprintf("%d unknown error\n", ERROR);
1227                 }
1228         }
1229
1230         else {
1231                 cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
1232         }
1233
1234         msiv_store(&u, changes_made);
1235 }
1236
1237
1238
1239 void ctdl_sieve_init(void) {
1240         char *cred = NULL;
1241         sieve2_context_t *sieve2_context = NULL;
1242         int res;
1243
1244         /*
1245          *      We don't really care about dumping the entire credits to the log
1246          *      every time the server is initialized.  The documentation will suffice
1247          *      for that purpose.  We are making a call to sieve2_credits() in order
1248          *      to demonstrate that we have successfully linked in to libsieve.
1249          */
1250         cred = strdup(sieve2_credits());
1251         if (cred == NULL) return;
1252
1253         if (strlen(cred) > 60) {
1254                 strcpy(&cred[55], "...");
1255         }
1256
1257         syslog(LOG_INFO, "%s\n",cred);
1258         free(cred);
1259
1260         /* Briefly initialize a Sieve parser instance just so we can list the
1261          * extensions that are available.
1262          */
1263         res = sieve2_alloc(&sieve2_context);
1264         if (res != SIEVE2_OK) {
1265                 syslog(LOG_CRIT, "sieve2_alloc() returned %d: %s\n", res, sieve2_errstr(res));
1266                 return;
1267         }
1268
1269         res = sieve2_callbacks(sieve2_context, ctdl_sieve_callbacks);
1270         if (res != SIEVE2_OK) {
1271                 syslog(LOG_CRIT, "sieve2_callbacks() returned %d: %s\n", res, sieve2_errstr(res));
1272                 goto BAIL;
1273         }
1274
1275         msiv_extensions = strdup(sieve2_listextensions(sieve2_context));
1276         syslog(LOG_INFO, "Extensions: %s\n", msiv_extensions);
1277
1278 BAIL:   res = sieve2_free(&sieve2_context);
1279         if (res != SIEVE2_OK) {
1280                 syslog(LOG_CRIT, "sieve2_free() returned %d: %s\n", res, sieve2_errstr(res));
1281         }
1282
1283 }
1284
1285 void cleanup_sieve(void)
1286 {
1287         struct RoomProcList *ptr, *ptr2;
1288
1289         if (msiv_extensions != NULL)
1290                 free(msiv_extensions);
1291         msiv_extensions = NULL;
1292
1293         begin_critical_section(S_SIEVELIST);
1294         ptr=sieve_list;
1295         while (ptr != NULL) {
1296                 ptr2 = ptr->next;
1297                 free(ptr);
1298                 ptr = ptr2;
1299         }
1300         sieve_list = NULL;
1301         end_critical_section(S_SIEVELIST);
1302 }
1303
1304 int serv_sieve_room(struct ctdlroom *room)
1305 {
1306         if (!strcasecmp(&room->QRname[11], MAILROOM)) {
1307                 sieve_queue_room(room);
1308         }
1309         return 0;
1310 }
1311
1312 CTDL_MODULE_INIT(sieve)
1313 {
1314         if (!threading)
1315         {
1316
1317                 ctdl_sieve_init();
1318                 CtdlRegisterProtoHook(cmd_msiv, "MSIV", "Manage Sieve scripts");
1319                 CtdlRegisterRoomHook(serv_sieve_room);
1320                 CtdlRegisterSessionHook(perform_sieve_processing, EVT_HOUSE);
1321                 CtdlRegisterCleanupHook(cleanup_sieve);
1322         }
1323
1324         /* return our module name for the log */
1325         return "sieve";
1326 }
1327